Review on 🔪 Efficiently Cut Through Various Diameters with Greenlee 645 001 Diameter Through Cutters by Jake Atonyo

These bits never have a problem and I use them on stainless steel all the time. Some people have trouble breaking them with a hand drill. If using with 645-011, the trick is to first punch a pilot hole without an external hole saw gauge. Most breaks occur when the outer hole saw first grips the metal.